int buttonPin=2;
int buttonvalue;
int dt=100;
void setup() {
  // put your setup code here, to run once:
  pinMode(buttonPin, INPUT);
  digitalWrite(buttonPin, HIGH);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  buttonvalue=digitalRead(buttonPin);
  Serial.print("Your button is:");
  Serial.println(buttonvalue);
  delay(1000);

}